Wastewater treatment plant construction work

Wastewater treatment plant construction work

The Contract comprises the design, procurement, construction and commissioning of a new process treatment facility to achieve a lower final effluent (FE) ammonia consent at Davyhulme Waste Water Treatment Works (WwTW), Manchester.

UK-Warrington: wastewater treatment plant construction work

2012/S 219-361220

Contract notice – utilities


Directive 2004/17/EC

Section I: Contracting entity

I.1)Name, addresses and contact point(s)

United Utilities Water plc
Clearwater 4, Lingley Green Business Park, Lingley Green Avenue, Great Sankey
Contact point(s): UK Warrington
For the attention of: Alison Ardrey
WA5 3UZ Warrington
Telephone: +44 1925773287
E-mail: alison.ardrey@uuplc.co.uk
Fax: +44 1925773253

Internet address(es):

General address of the contracting entity: www.unitedutilities.co.uk

Electronic access to information: Interested parties are required to complete a pre-qualification questionnaire which can be located at the following URL address http://amp5.uudataroom.com/login.asp Login: Davyhulme Password: WFD
Further information can be obtained from: The above mentioned contact point(s)

Tenders or requests to participate must be sent to: The above mentioned contact point(s)

I.2)Main activity

I.3)Contract award on behalf of other contracting entities

The contracting entity is purchasing on behalf of other contracting entities: no

Section II: Object of the contract

II.1.1)Title attributed to the contract by the contracting entity:

PRO000138 Davyhulme AMP5 water framework directive (WFD).
II.1.2)Type of contract and location of works, place of delivery or of performance

Design and execution

II.1.3)Information about a public contract, a framework agreement or a dynamic purchasing system (DPS)

The notice involves a public contract
II.1.4)Information on framework agreement
II.1.5)Short description of the contract or purchase(s):

The works proposed are an alternative solution to that required under Contract Notice referenced 2012/S 97 162177. United Utilities Water plc reserve the right to select either solution and interested parties shall be notified as soon as is reasonably practical which solution is selected.
The Contract comprises the design, procurement, construction and commissioning of a new process treatment facility to achieve a lower final effluent (FE) ammonia consent at Davyhulme Waste Water Treatment Works (WwTW), Manchester. Note: dependant on the type of treatment process selected there may be a requirement for the Contractor to provide an extended period of Client training and / or assistance to optimise plant performance.
Davyhulme is United Utilities largest WwTW, treating wastewater from a population equivalent of about 1.1 million from the Greater Manchester conurbation. Davyhulme discharges its final effluent (FE) to the Manchester Ship Canal. The current FE consent is 20mg/l BOD, 30mg/l SS and 3mg/l NH3 (on a 95 %ile basis) and 75 % overall COD removal across the whole WwTW. The future consent will be 20mg/l BOD, 30mg/l SS and 1mg/l NH3 (on a 95 %ile basis) and 75 % overall COD removal across the whole WwTW.
The future FE consent is driven by Davyhulme’s inclusion in the National Environment Programme as a result of the receiving Manchester Ship Canal being designated under the Freshwater Fish Directive in 2003. This revised consent will also meet the requirements of the Water Framework Directive.
Background current operation.
Davyhulme WwTW consists of two parallel treatment streams (ASP1 and ASP2) downstream of a common inlet sewer. Both ASP1 and ASP2 streams have preliminary screening and grit removal, primary settlement prior to non nitrifying aeration tanks (provided with surface aeration) and final settlement. The flow split to ASP1 and ASP2 is 45 % and 55 % respectively. The effluent from the ASP1 and ASP2 final settlement tanks is treated together in a common tertiary biological aerated flooded filter (BAFF) for nitrification, from which final effluent (FE) is discharged to the Manchester Ship Canal. The consented WwTW flow to full treatment (FTFT) and dry weather flow (DWF) are 714Ml/d and 340Ml/d respectively. This site is in an odour sensitive area and has two odour control plants serving the inlet works, ASP1 primary settlement tanks and aeration tanks and raw sludge treatment and storage.
Sludge treatment at Davyhulme WwTW is currently undergoing refurbishment and expansion as part of the Sludge Balanced Asset Programme (SBAP) project to treat raw sludge up to 91 000 tonnes dry solids sludge per annum (TDSPA). The major components of SBAP are a reception / screening facility of indigenous sludge, followed by thickening of indigenous and imported liquid sludge and a reception / storage facility for sludge cake imports. Sludge is subject to digestion pre-treatment by thermal hydrolysis followed by mesophilic anaerobic digestion. Digested sludge may either be dewatered, using centrifuges and exported to land or transferred to the United Utilities Shell Green incineration facility via the Mersey Valley Sludge Pipeline (MVSP).
The dewatering centrifuges will produce between 16 000 and 32 000 tdspa of thermally hydrolysed digested sludge cake. The centrate from the dewatering centrifuges will be treated in a dissolved air flotation (DAF) plant (to remove excess suspended solids) and stored in a balancing tank. It will then return to the ASP1 stream before either primary settlement tanks, aeration tanks or final settlement tanks.
The sludge treatment operations are managed via a permit under the Environmental Permitting regulations (EPR). The permit details discharge limits and sampling requirements for all solid, liquid and gas emissions from Davyhulme WwTW, for existing and SBAP sludge treatment operations. A major variation to the existing licence will be negotiated with the EA to incorporate the new process treatment facility.
Due to strategic importance of Davyhulme WwTW as a part of the Company’s wastewater treatment facilities no unauthorised disruption to the existing plant shall be allowed throughout the construction and commissioning process. The operation and throughput of the existing plant must therefore be maintained at the current level throughout the construction period.
Related contracts (outside the scope of this tender process).
Not applicable.
Scope of Contract covered by this OJEU notice.
Interested parties should be aware that United Utilities fall within a regulated environment and as such a number of regulatory and standards must be maintained in relation to the activities.
The following information contains details of the alternative solution covered by this Contract Notice with a further two additional options that may or may not be required:
1. A new Activated sludge plant 3 (ASP3) is required to replace one of the existing ASP streams (ASP1, or ASP2). The new ASP3 Stream shall treat 60 % of incoming flows and shall solely receive and treat the SBAP dewatered centrate liquors. It shall be assumed that 60 % of the SBAP thickened sludge liquors shall enter ASP3;
2. A new inlet works may also be required as part of the scope of works, which would replace the existing ASP2 inlet works and reduce flow to the existing ASP1 / storm inlet works. The new Inlet Works will receive flows up to the consented FTFT of 714Ml/d. Flows in excess of 714 Ml/d will spill to the existing ASP1 / storm inlet works and gravitate to the existing storm tanks. Control of flows to the new ASP3 and the retained existing ASP will be downstream of the new inlet works;
3. Refurbishment of the plant and equipment on the retained existing ASP stream may also be required as part of the scope of works.
It is envisaged that the new ASP3 stream will consist of primary settlement tanks (PST), Fine bubble diffused air (FBDA) type ASP, final settlement tanks (FST) and mechanical thickening of Surplus Activated Sludge (SAS). It will be required to produce a treated effluent to meet the future FE consent. FE from the new ASP3 Stream is envisaged to re-join the existing final effluent culvert, prior to discharge into the Manchester Ship Canal. The new treatment facility shall be totally independent of the existing BAFF and therefore the BAFF must not form part of any proposed solution.
It is envisaged that the new Inlet Works will consist of a diversion chamber on the existing inlet sewer, storm overflow structure, FTFT flow control, course and fine screens, bypass, grit removal, and associated infrastructure.
It is anticipated that odour abatement technologies shall be required for the more odorous technologies.
It is anticipated this contract will generally incorporate the following:
Design, construction and commissioning of the new works.
The new works are expected to include but not be limited to the following:
Primary settlement tanks (PST);
Activated Sludge Plant (FBDA);
Final settlement tanks (FST).
Mechanical thickening of surplus activated sludge (SAS);
Odour control;
Works to ensure compliance with the requirements of the EPR permit;
Internal site roads within the new treatment facility areas;
New site access road from the new treatment facility to a new site entrance;
Construction of a new primary sub-station building;
Modifications to existing site high voltage electrical infrastructure;
Ancillary and accommodation works – site drainage and return;
Electrical instrumentation control and automation (EICA) and a distributed control system (DCS);
Inlet works (FTFT only (optional);
Refurbishment of the retained existing ASP stream (optional).
II.1.6)Common procurement vocabulary (CPV)


II.1.7)Information about Government Procurement Agreement (GPA)

The contract is covered by the Government Procurement Agreement (GPA): yes
II.1.8)Information about lots

This contract is divided into lots: no
II.1.9)Information about variants

Variants will be accepted: yes
II.2)Quantity or scope of the contract
II.2.1)Total quantity or scope:

Design, procurement, construction and commissioning of the works described in II.1.5).
Estimated value excluding VAT
Range: between 123 000 000 and 171 000 000 GBP
II.2.2)Information about options

Options: yes
Description of these options: Refer to section II.1.5).
II.2.3)Information about renewals

This contract is subject to renewal: no
II.3)Duration of the contract or time limit for completion

Duration in months: 30 (from the award of the contract)

Section III: Legal, economic, financial and technical information

III.1)Conditions relating to the contract
III.1.1)Deposits and guarantees required:

The contracting entity reserves the right to require parent company guarantees, performance bond or other forms of appropriate security.
III.1.2)Main financing conditions and payment arrangements and/or reference to the relevant provisions governing them:

To be identified in the invitation to tender documents.
III.1.3)Legal form to be taken by the group of economic operators to whom the contract is to be awarded:

In the case of an award to a consortium, alliance or joint venture etc all members shall be required to contract in any one of the following forms:
i) Contractual joint venture with joint and several liability under English Law;
ii) Corporate joint venture;
iii) Contractor / subcontractor (s) relationship.
Where a company representing a consortia, alliance or joint venture expresses an interest, the company who responds to this notice will be deemed to be the lead bidder to whom all communications will be addressed.
Subcontracting will be permitted.
III.1.4)Other particular conditions:

The performance of the contract is subject to particular conditions: no
III.2)Conditions for participation
III.2.1)Personal situation of economic operators, including requirements relating to enrolment on professional or trade registers
III.2.2)Economic and financial ability

Information and formalities necessary for evaluating if the requirements are met: Please refer to the pre-qualification questionnaire.
III.2.3)Technical capacity

Information and formalities necessary for evaluating if the requirements are met: Please refer to the pre-qualification questionnaire.
III.2.4)Information about reserved contracts
III.3)Conditions specific to services contracts
III.3.1)Information about a particular profession

Execution of the service is reserved to a particular profession: no
III.3.2)Staff responsible for the execution of the service

Legal persons should indicate the names and professional qualifications of the staff responsible for the execution of the service: yes

Section IV: Procedure

IV.1)Type of procedure
IV.1.1)Type of procedure

Some candidates have already been selected (if appropriate under certain types of negotiated procedures): no
IV.2)Award criteria
IV.2.1)Award criteria

The most economically advantageous tender in terms of the criteria stated in the specifications or in the invitation to tender or to negotiate
IV.2.2)Information about electronic auction

An electronic auction will be used: no
IV.3)Administrative information
IV.3.1)File reference number attributed by the contracting entity:
IV.3.2)Previous publication(s) concerning the same contract

Periodic indicative notice

Notice number in the OJEU: 2010/S 151-233703 of 3.8.2010

Other previous publications

Notice number in the OJEU: 2012/S 097-162177 of 22.5.2012

IV.3.3)Conditions for obtaining specifications and additional documents

Payable documents: no
IV.3.4)Time limit for receipt of tenders or requests to participate

7.1.2013 – 14:00
IV.3.5)Language(s) in which tenders or requests to participate may be drawn up
IV.3.6)Minimum time frame during which the tenderer must maintain the tender
IV.3.7)Conditions for opening tenders

Persons authorised to be present at the opening of tenders: yes
Authorised representative of United Utilities Water plc.

Section VI: Complementary information

VI.1)Information about recurrence

This is a recurrent procurement: no
VI.2)Information about European Union funds

The contract is related to a project and/or programme financed by European Union funds: no
VI.3)Additional information:

The Contracting Entity reserves the right not to award any or part of this Contract. Bidding is at the risk of the bidders.
Interested parties are invited to an introductory presentation to be held at the Best Western Everglades Park Hotel, Derby Road, Widnes WA8 3UJ on Monday 26.11.2012 commencing 10:00 am. Interested parties are to confirm no later than close of business Thursday 22.11.2012 their intention to attend.
VI.4)Procedures for appeal
VI.4.1)Body responsible for appeal procedures
VI.4.2)Lodging of appeals

Precise information on deadline(s) for lodging appeals: United Utilities Water plc will incorporate a standstill period at the point information on the award of contract is communicated to tenderers. That notification will provide full information on the award decision. The standstill period, which will be for a minimum of 10 calendar days provides time for unsuccessful tenderers to challenge the award decision before the contract is entered into.
The Utilities Contracts Regulations (SI 2006 N° 6) provide for aggrieved parties who have been harmed or are at risk of harm by a breach of the rules to take action in the High Court (England, Wales, and Northern Ireland).
VI.4.3)Service from which information about the lodging of appeals may be obtained

VI.5)Date of dispatch of this notice:9.11.2012